Connect the SDA (Serial Data) pin of the LCD module to the SDA pin on the Arduino. Connect the SCL (Serial Clock) pin of the LCD module to the SCL pin on the Arduino. Make sure to connect the power ...

Normally, LCD needs to be connected to approximately 8 pins and the 3x4 keypad to 7 pins on the Arduino, this sure will limits the other devices from connecting to Arduino. With the use of I2C, both ...

To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...

Circuit Diagram . Working Explanation. Here for demonstrating I2C communication in Arduino, we use Two Arduino UNO with Two 16X2 LCD display attached to each other and use two potentiometers at both ...

There are 8 I/O pins, 3 pins (A0, A1, A2) for I2C bus address and SDA, SCL pins. LCD controller board has an inbuilt potentiometer to control contrast of LCD. Pin diagrams of IC and LCD controller are ...

I2C protocol makes it easier to connect more ICs using only 2 wires SDA and SCL and allows communication between them at relatively low speed. The I2C bus or TWI (Two Wire Interface) allows a single ...

Here’s a hack: If you are lacking in the free pins department, try swapping SCL & SDA for a free second i2c bus. Like this: MCU.GPIO_A – device1.SCL – device2.SDA ...

The Waveshare 1.69-inch IPS touch LCD is a 1.69-inch rounded display with 240×280 resolution and a 262K color range. The display driver (ST7789V2) and touch controller (CST816T) are integrated ...